Question
While doing a this procedure (image) in an infant you choose a lower inter-vertebral space than in an adult. Choose the TRUE reason.
A. The spinal cord extends up to lower border of L1 in an adult
B. The spinal cord extends up to the lower border of L3 in an infant
C. The spinal cord extends up to the upper border of L3 in an infant
D. The spinal cord extends up to the upper border of L2 in an infant
Show Answer
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Correct Answer » C
Explanation
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This procedure is Lumbar puncture
Ans is C The spinal cord extends up to the upper border of L3 in an infant
Though the first option is true it is not the answer to the question.
The spinal cord extends to the lower border of L3 in infants that is why we opt for a lower inter-vertebral space in infants while doing a lumbar puncture.
The dura, subdural space and subarachnoid space extends up to S2.
The pia mater extends to the tip of coccyx.
